import { Body, Controller, Get, HttpCode, Post, Req, Res } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import type { InfoConexion, UsuarioSesion } from '@dp/shared';
import type { Request, Response } from 'express';
import { AppConfig } from '../config/configuration.js';
import { ServiceLayerClient } from '../service-layer/service-layer.client.js';
import { SessionStore } from '../service-layer/session.store.js';
import { VERSION_APP } from '../version.js';
import type { SapSession } from '../service-layer/session.store.js';
import { LoginDto } from './dto/login.dto.js';
import { CurrentSession, Public, SESSION_COOKIE } from './session.guard.js';

function aUsuario(sesion: SapSession): UsuarioSesion {
  return { userName: sesion.userName, companyDb: sesion.companyDb, version: sesion.version, app: VERSION_APP };
}

@Controller('auth')
export class AuthController {
  constructor(
    private readonly serviceLayer: ServiceLayerClient,
    private readonly sessions: SessionStore,
    private readonly config: ConfigService<AppConfig, true>,
  ) {}

  @Public()
  @Get('info')
  info(): InfoConexion {
    return {
      companyDb: this.config.get('serviceLayer', { infer: true }).companyDb,
      dbType: this.config.get('dbType', { infer: true }),
      app: VERSION_APP,
    };
  }

  @Public()
  @Post('login')
  @HttpCode(200)
  async login(@Body() dto: LoginDto, @Res({ passthrough: true }) res: Response): Promise<UsuarioSesion> {
    const sesion = await this.serviceLayer.login(dto.userName, dto.password);

    res.cookie(SESSION_COOKIE, sesion.id, {
      httpOnly: true,
      sameSite: 'strict',
      secure: this.config.get('cookieSecure', { infer: true }),
      path: '/',
    });

    return aUsuario(sesion);
  }

  @Public()
  @Post('logout')
  @HttpCode(204)
  async logout(@Req() req: Request, @Res({ passthrough: true }) res: Response): Promise<void> {
    const sesion = this.sessions.obtener(req.cookies?.[SESSION_COOKIE] as string | undefined);
    if (sesion) {
      await this.serviceLayer.logout(sesion);
    }
    res.clearCookie(SESSION_COOKIE, { path: '/' });
  }

  @Get('me')
  me(@CurrentSession() sesion: SapSession): UsuarioSesion {
    return aUsuario(sesion);
  }
}